Chaeles e



(No Model.)

0. E. TIBBLES.

SEWING MACHINE.

No. 269,607. Patented Dec. 26,1882.

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' ATTORNEYS.

UNITED STATES I PATENT DFFICE.

CHARLES I lTIBBLES, OF BURLINGTON, IOWA, ASSIGNOR TO THE HAlVK- EYE MACHINE COMPANY, OF SAME PLACE.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 269,607, dated December 26, 1882.

Application filed September 28, 1881. (No model.) i

To all whom it may concern:

Be it known that I, CHARLES E. TiBBLEs, of Burlington, in the county of Des Moines and State of Iowa, have invented a certain new and useful Improvement in Sewing-Machines, of which the following is a full, clear, and exact description.

My improvements relate to the shuttle-driving mechanism, and have the object to obtain direct and positive connection between the driving-shalt and shuttle-arm.

Reference being bad to the accompanying.

drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures, Figure l is a perspective view of the shuttle-operating mechanism in an inverted position 0f the bedplate. Fig. 2 is a plan view ofthe shuttle-arm. Fig. 3 is a face view, and Fig. 4 a cross-section, of the anti-friction plates employed with the mechanism.

A is the bed-plate, and B the driving-shaft sustained in suitable beatingslongitudinallyof and at about the mid-width of the bed.

0 is the shuttle-arm, pivoted at a on the bedplate of the machine.

The driving-shaft B is formed with a crank, b, the Wrist-pin of which is turned with a ball, c.- On the end of shuttle-arm O is a yoke, D, formed by two plates, d d, projecting at right angles to the main arm,and through this yoke the wrist-pin 0t crank b extends. This construction is compact, and furnishes direct connection between the shuttle-arm and crank. To reduce friction, plates 0 e are fitted between the sides cl ot'the yoke and ball 0. These plates (shown separately in Fig. 4) are formed of nickel and with concave recesses that receive the ball 0, so that they are retained on the ball and slide on the plates (1.

The shuttle-bar U is open or forked at its pivot end through the pivot-boxesfand the yoke D. Set-screws g, tapped in the arm at each side of boxes f, serve for drawing and retaining the box tightly on the pivot-pin, and the box D is provided with screws h fora similar purpose, so that wear can be readily taken up and lost motion prevented.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent The combination, with the shaft B, provided with the crank I), having a ball, 0, of the shuttle-lever 0, split on both sides of its pivotal point and having the adjusting-screws g g and the split yoke 1), provided with the adjusting-screws IL, atthe ends thereof, and the bearing-plates e, substantially as herein shown and described.

CHARLES EDWIN TIBBLES.

\Vitnesses T. B. SNYDER,

JESSIE HARNIGK. 

